Amazon Prime is an yearly subscription service ($79 per year) offered by Amazon.com which allows shoppers to get free two-day shipping or one-day shipping for $3.99 USD on most items purchased from Amazon.com (not all items are “Prime eligible”, though). If you are a college student (you need a valid .edu e-mail address) you have the ability to get Amazon Prime free for one year:
Visit the Amazon Student page to get more details and to signup.
Thanks Khalid!